Writing instrument



FIG. 1 is a front view of the writing instrument;

FIG. 2 is a first side view of the writing instrument of FIG. 1, theopposite side view being a mirror image of FIG. 2;

FIG. 3 is a bottom side view of the writing instrument of FIG. 1;

FIG. 4 is a front view of the writing instrument of FIG. 1 with the capin an open position; and,

FIG. 5 is a side view of the writing instrument of FIG. 4, the oppositeside view being a mirror image of FIG. 5.

The broken lines shown in FIGS. 4 and 5 are included for the purpose ofshowing portions that form no part of the claimed design.

The ornamental design for a writing instrument, as shown and described.